A concurrently optimization of H and OH binding energies in atomically Ni anchored Ru/RuO2 nanosheet driving high CO-tolerant hydrogen oxidation catalysis
The development of highly active and CO-tolerant hydrogen oxidation reaction (HOR) electrocatalysts is of great significance for alkaline exchange membrane fuel cells (AEMFCs). Here, the designed atomically Ni anchored Ru/RuO<sub>2</sub> heterostructure nanosheets (Ni<sub>SA</sub>-Ru@RuO<sub>2</sub> NSs/C) exhibit enhanced activity and stability for HOR in alkaline media. The optimized electrocatalyst delivers a high CO-tolerant durability with 92.3% retention in the 1000 ppm CO concentration after 5000 s test. Moreover, the anode catalyst Ni<sub>SA</sub>-Ru@RuO<sub>2</sub> NSs/C assembled AEMFCs output a peak power density (PPD) and specific PPD of 1.76 W cm<sup>-2</sup> and 17.6 W mg<sub>PGM</sub><sup>-1</sup> under the H<sub>2</sub>/O<sub>2</sub> condition and performed a long-term stability with negligible decay for 100 h at 0.5 A cm<sup>-2</sup> for the AEMFCs. The relative mechanism studies reveal that the Ru/RuO<sub>2</sub> heterostructure nanosheet and dispersed Ni single atoms have optimized the *H and *OH adsorption simultaneously and weaken the *CO adsorption. Our work may offer a significant guideline on the rational design of high-performance HOR electrocatalyst for energy-related applications.
Authors
- Zhiwei Hu (ORCID: https://orcid.org/0000-0003-0324-2227)
- Nan Fang (ORCID: https://orcid.org/0000-0002-1053-1900)
- Renjie Ren
- Lin Zhuang (ORCID: https://orcid.org/0000-0002-5642-6735)
- Youyong Li (ORCID: https://orcid.org/0000-0002-5248-2756)
- Qi Shao (ORCID: https://orcid.org/0000-0002-9858-0458)
- Yujin Ji (ORCID: https://orcid.org/0000-0003-3177-2073)
- Xiaoqing Huang (ORCID: https://orcid.org/0000-0003-3219-4316)
- Qingyu Kong (ORCID: https://orcid.org/0000-0002-3274-179X)
- Lujie Jin (ORCID: https://orcid.org/0000-0002-1907-2712)
- Liangbin Liu
- Wei Yan
Institutions
- Xiamen University (CN)
- Synchrotron soleil (FR)
- Wuhan University (CN)
- Soochow University (CN)
- Max Planck Institute for Chemical Physics of Solids (DE)
- Tan Kah Kee Innovation Laboratory (CN)
Publication Details
- Journal
- Nature Communications
- Published
- 2025-10-08
- DOI
- https://doi.org/10.1038/s41467-025-63998-8
- Citations
- 3
- Primary Topic
- Catalytic Processes in Materials Science
- Type
- article
- Field-Weighted Citation Impact
- 1.55
Funders
- National Natural Science Foundation of China
- Xiamen University
- Priority Academic Program Development of Jiangsu Higher Education Institutions
- Collaborative Innovation Center of Suzhou Nano Science and Technology
- Fundamental Research Funds for the Central Universities